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    • 2. 发明授权
    • Rate-7/8 maximum transition run code encoding and decoding method and apparatus
    • Rate-7/8最大过渡码编码和解码方法及装置
    • US07006019B2
    • 2006-02-28
    • US10973831
    • 2004-10-27
    • Jun LeeJoo-hyun LeeJae-jin LeeByung-kyu Lee
    • Jun LeeJoo-hyun LeeJae-jin LeeByung-kyu Lee
    • H03M7/00
    • H03M5/145G11B20/1426
    • A rate 7/8 MTR code encoding/decoding method and apparatus. The encoding method includes: generating a rate-7/8 MTR code for inputting 7-bit data and outputting a predetermined 8-bit codeword; checking whether codewords satisfy a predetermined constraint condition by connecting the 8-bit codeword and a subsequent 8-bit codeword; and if the codewords do not violate the constraint condition, not converting the codewords. The decoding method includes: checking whether the codewords satisfy a predetermined MTR constraint condition by connecting a current 8-bit codeword c(k) and a subsequent 8-bit codeword c(k+1); if the codewords violate the constraint condition, converting the codewords, and if the codewords do not violate the constraint condition, not converting the codewords; and decoding each converted 8-bit codeword into 7-bit data using a predetermined MTR code. Data is reliably reproduced with high write density, and large amounts of data are stored in and reproduced from a magnetic recording information storage medium.
    • 速率7/8 MTR码编码/解码方法和装置。 编码方法包括:生成用于输入7位数据并输出预定8位码字的速率-7 / 8MTR码; 通过连接8位码字和随后的8位码字来检查码字是否满足预定约束条件; 并且如果码字不违反约束条件,则不转换码字。 解码方法包括:通过连接当前的8位码字c(k)和随后的8位码字c(k + 1)来检查码字是否满足预定的MTR约束条件; 如果码字违反约束条件,转换码字,并且如果码字不违反约束条件,则不转换码字; 以及使用预定的MTR码将每个转换的8位码字解码为7位数据。 数据以高写入密度被可靠地再现,并且大量数据被存储在磁记录信息存储介质中并从磁记录信息存储介质再现。
    • 3. 发明申请
    • Rate-7/8 maximum transition run code encoding and decoding method and apparatus
    • Rate-7/8最大过渡码编码和解码方法及装置
    • US20050116843A1
    • 2005-06-02
    • US10973831
    • 2004-10-27
    • Jun LeeJoo-hyun LeeJae-jin LeeByung-kyu Lee
    • Jun LeeJoo-hyun LeeJae-jin LeeByung-kyu Lee
    • G11B20/14G11B20/10G11B20/18H03M5/14H03M7/14H03M7/00
    • H03M5/145G11B20/1426
    • A rate 7/8 MTR code encoding/decoding method and apparatus. The encoding method includes: generating a rate-7/8 MTR code for inputting 7-bit data and outputting a predetermined 8-bit codeword; checking whether codewords satisfy a predetermined constraint condition by connecting the 8-bit codeword and a subsequent 8-bit codeword; and if the codewords do not violate the constraint condition, not converting the codewords. The decoding method includes: checking whether the codewords satisfy a predetermined MTR constraint condition by connecting a current 8-bit codeword c(k) and a subsequent 8-bit codeword c(k+1); if the codewords violate the constraint condition, converting the codewords, and if the codewords do not violate the constraint condition, not converting the codewords; and decoding each converted 8-bit codeword into 7-bit data using a predetermined MTR code. Data is reliably reproduced with high write density, and large amounts of data are stored in and reproduced from a magnetic recording information storage medium.
    • 速率7/8 MTR码编码/解码方法和装置。 编码方法包括:生成用于输入7位数据并输出预定8位码字的速率-7 / 8MTR码; 通过连接8位码字和随后的8位码字来检查码字是否满足预定约束条件; 并且如果码字不违反约束条件,则不转换码字。 解码方法包括:通过连接当前的8位码字c(k)和随后的8位码字c(k + 1)来检查码字是否满足预定的MTR约束条件; 如果码字违反约束条件,转换码字,并且如果码字不违反约束条件,则不转换码字; 以及使用预定的MTR码将每个转换的8位码字解码为7位数据。 数据以高写入密度被可靠地再现,并且大量数据被存储在磁记录信息存储介质中并从磁记录信息存储介质再现。
    • 5. 发明申请
    • Rate-13/15 maximum transition run code encoding and decoding method and apparatus
    • Rate-13/15最大过渡码编码和解码方法及装置
    • US20050174262A1
    • 2005-08-11
    • US11031529
    • 2005-01-10
    • Jun LeeJoo-hyun LeeKyu-suk LeeJae-jin Lee
    • Jun LeeJoo-hyun LeeKyu-suk LeeJae-jin Lee
    • G11B20/10G11B20/14H03M5/14H03M7/00
    • H03M5/145G11B20/1426G11B2020/1434G11B2020/1446
    • Provided are a rate 13/15 MTR code encoding/decoding method and apparatus. The encoding method includes: generating a predetermined rate-13/15 MTR code in which 13-bit data corresponds to 15-bit data; outputting input 13-bit data as a 15-bit codeword according to the rate-13/15 MTR code; checking whether codewords satisfy a predetermined constraint condition by connecting the 15-bit codeword and a subsequent 15-bit codeword; and converting specific bits of the codewords if the codewords violate the constraint condition and not converting the codewords if the codewords do not violate the constraint condition. The rate-13/15 MTR (j=2, k=8) code includes: 8192 codewords obtained to prevent the number of consecutive transitions from becoming 3 at code boundaries in a modulation coding process. Data can be reliably reproduced with high write density, and a large amount of data can be stored in and reproduced from a magnetic recording information storage medium.
    • 提供了一种速率13/15的MTR码编码/解码方法和装置。 编码方法包括:生成13比特数据对应于15比特数据的预定速率-13 / 15MTR码; 根据速率-13 / 15MTR码输出13位数据作为15位码字; 通过连接15位码字和随后的15位码字来检查码字是否满足预定约束条件; 以及如果所述码字违反所述约束条件并且如果所述码字不违反所述约束条件则不转换所述码字,则转换所述码字的特定比特。 速率-13 / 15MTR(j = 2,k = 8)码包括:8192个码字,用于防止在调制编码过程中在码边界处连续转换的数量变为3。 可以以高写入密度可靠地再现数据,并且可以将大量数据存储在磁记录信息存储介质中并从磁记录信息存储介质再现。
    • 6. 发明申请
    • METHOD OF DETERMINING HEAD CHARACTERISTIC OF HDD AND RECORDING MEDIUM TO PERFORM THE SAME
    • 确定硬盘和记录介质的头部特性以实现其性能的方法
    • US20080002271A1
    • 2008-01-03
    • US11769955
    • 2007-06-28
    • Jong-yun YUNJoo-hyun Lee
    • Jong-yun YUNJoo-hyun Lee
    • G11B5/02G11B27/36
    • G11B5/40G11B5/3136
    • A method of determining a head characteristic, i.e. determining whether a head has a write characteristic stronger or weaker than that of a normal write head, and a recording medium suitable to perform the method. The method includes detecting a first error rate by writing data and then reading the written data without control pole tip protrusion (PTP) contralto compensate for thermal pole tip protrusion (TPTP) in a state where the head is fully cooled, detecting a second error rate by writing data and then reading the written data with the PTP control in the state where the head is fully cooled, calculating a difference between the first error rate and the second error rate, and determining based on the calculated error rate difference whether the head is a strong write head having a stronger write characteristic than that of the normal write head or a weak write head having a weaker write characteristic than that of the normal write head. Accordingly, since an adjacent track write (ATW) problem, which may occur due to a narrow gap between adjacent tracks, and a weak write problem, which may occur due to a short media recording length per data bit, can be simultaneously considered, high reliability can be secured in terms of recording and reproducing in an HDD.
    • 确定头特性的方法,即确定头是否具有比正常写头的写入特性更强或更弱的写入特性,以及适于执行该方法的记录介质。 该方法包括通过写入数据来检测第一错误率,然后在头部被完全冷却的状态下对控制极尖突起(PTP)进行补偿以读取热极尖突起(TPTP),检测第二错误率 通过写入数据,然后在头完全冷却的状态下用PTP控制读取写入的数据,计算第一错误率和第二错误率之间的差,并且基于计算出的差错率来确定头是否是 具有比正常写入头更强的写入特性的强写入头或具有比正常写入头的写入特性更弱的弱写入头。 因此,由于可能由于每个数据比特的短的媒体记录长度而可能发生的相邻轨道之间的窄间隙可能发生的相邻轨道写入(ATW)问题和弱写入问题,因此可以同时考虑高 可以确保在HDD中的记录和再现方面的可靠性。
    • 8. 发明授权
    • Apparatus and method for stabilizing concentration of aerosol
    • 用于稳定气溶胶浓度的装置和方法
    • US07814933B2
    • 2010-10-19
    • US10998043
    • 2004-11-29
    • Yoon-ho KhangJoo-hyun Lee
    • Yoon-ho KhangJoo-hyun Lee
    • B01F15/02
    • A61K31/54Y10T137/85954Y10T137/87587
    • Provided is an apparatus for stabilizing the concentration of a previously generated aerosol, which includes: an aerosol inlet channel; an aerosol pressure adjustment unit accelerating the aerosol; a buffer connected to the aerosol pressure adjustment unit via an aerosol transport channel and having a much larger sectional area than the aerosol inlet channel and the aerosol transport channel, wherein the aerosol accelerated by the aerosol pressure adjustment unit reaches the buffer via the aerosol transport channel and is mixed in the buffer; a feedback channel connecting between the buffer and the preceding channel to the buffer to feedback a portion of the aerosol present in the buffer to the preceding channel to the buffer; and an aerosol outlet channel releasing the aerosol uniformly mixed in the buffer. Provided is also a method for stabilizing the concentration of an aerosol according to the same principle as in the apparatus.
    • 提供一种用于稳定先前产生的气溶胶的浓度的装置,其包括:气溶胶入口通道; 气溶胶压力调节单元,加速气溶胶; 缓冲器,其经由气溶胶输送通道连接到气溶胶压力调节单元,并且具有比气溶胶入口通道和气溶胶输送通道大得多的截面积,其中由气溶胶压力调节单元加速的气溶胶通过气溶胶输送通道到达缓冲器 并在缓冲液中混合; 将缓冲器和前一通道连接到缓冲器的反馈通道,以将缓冲器中存在的气溶胶的一部分反馈到前一通道到缓冲器; 以及将气溶胶均匀混合在缓冲器中的气溶胶出口通道。 还提供了根据与装置中相同原理来稳定气溶胶浓度的方法。
    • 10. 发明授权
    • Rate-13/15 maximum transition run code encoding and decoding method and apparatus
    • Rate-13/15最大过渡码编码和解码方法及装置
    • US07057536B2
    • 2006-06-06
    • US11031529
    • 2005-01-10
    • Jun LeeJoo-hyun LeeKyu-suk LeeJae-jin Lee
    • Jun LeeJoo-hyun LeeKyu-suk LeeJae-jin Lee
    • H03M7/00
    • H03M5/145G11B20/1426G11B2020/1434G11B2020/1446
    • Provided are a rate 13/15 MTR code encoding/decoding method and apparatus. The encoding method includes: generating a predetermined rate-13/15 MTR code in which 13-bit data corresponds to 15-bit data; outputting input 13-bit data as a 15-bit codeword according to the rate-13/15 MTR code; checking whether codewords satisfy a predetermined constraint condition by connecting the 15-bit codeword and a subsequent 15-bit codeword; and converting specific bits of the codewords if the codewords violate the constraint condition and not converting the codewords if the codewords do not violate the constraint condition. The rate-13/15 MTR (j=2, k=8) code includes: 8192 codewords obtained to prevent the number of consecutive transitions from becoming 3 at code boundaries in a modulation coding process. Data can be reliably reproduced with high write density, and a large amount of data can be stored in and reproduced from a magnetic recording information storage medium.
    • 提供了一种速率13/15的MTR码编码/解码方法和装置。 编码方法包括:生成13比特数据对应于15比特数据的预定速率-13 / 15MTR码; 根据速率-13 / 15MTR码输出13位数据作为15位码字; 通过连接15位码字和随后的15位码字来检查码字是否满足预定约束条件; 以及如果所述码字违反所述约束条件并且如果所述码字不违反所述约束条件则不转换所述码字,则转换所述码字的特定比特。 速率-13 / 15MTR(j = 2,k = 8)码包括:8192个码字,用于防止在调制编码过程中连续转换的数目在码边界处变为3。 可以以高写入密度可靠地再现数据,并且可以将大量数据存储在磁记录信息存储介质中并从磁记录信息存储介质再现。